A long metal chain hangs from the ceiling with a bucket attached. It is harmless until the spirits haunting the area are angered.
Haunted Chain CR 7
The haunted chain lifts anyone it constricts to the top of the shaft and on the next round drops him after attempting (and possibly succeeding) on a second round of constriction damage. The haunted chain continues its attacks for 5 rounds or until destroyed.
Str 42, Dex 6, Con -, Int -, Wis 1, Cha 1
Base Atk +13; CMB +37(+41 on grapple); CMD 45
The spirits haunting the small space manifest by animating the chain hanging from the ceiling here. The chain twists like an immense snake as it animates, coiling over and across itself and swinging the bucket attached to its end with deadly effect. The animated chain persists for 5 rounds, and then returns to normal. It is attached to the ceiling and cannot move. These are normally found in stairwells or other confined areas.
Pathfinder 6: Spires of Xin-Shalast. Copyright 2008, Paizo Publishing LLC. Author: Greg A. Vaughan